How to get a sequence of the images which saved in a folder

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C#

tracking

image-processing

I want to load a sequence of images one by one for tracking it but I have a problem with getting it. I saved the sequence in "OpenHandLeft_BW"folder inside the" image" folder then I called it in the program.

What I have tried:

List<TemplatePyramid> fromFiles()
        {
            Console.WriteLine("Building templates from files...");

            var list = new List<TemplatePyramid>();

            
            string resourceDir = " D:\\image\\OpenHandLeft_BW'";
            string[] files = Directory.GetFiles(resourceDir, "*.bmp");

            object syncObj = new object();
            Parallel.ForEach(files, delegate(string file)
            //foreach(var file in files)
            {
                Gray<byte>[,] preparedBWImage = ImageIO.LoadGray(file).Clone();

                try
                {
                    var tp = TemplatePyramid.CreatePyramidFromPreparedBWImage(preparedBWImage, new FileInfo(file).Name /*"OpenHand"*/);
                    lock (syncObj)
                    { list.Add(tp); };
                }
                catch (Exception)
                { }
            });

            //XMLTemplateSerializer<ImageTemplatePyramid<ImageTemplate>, ImageTemplate>.ToFile(list, "C:/bla.xml");
            return list;
        }

when I run it ...get message "

Could not find a part of the path 'D:\image\OpenHandLeft_BW''.

I want help to fix this problem or get any advice to write it in another way